On third glass of mulled wine. Final post of advent tomorrow might be a bit delayed :)

i found out in the worst way possible that linux applies iptables rules to traffic going across a bridge by default

it was killing ipv6 on my container host because router advertisments kept getting dropped

If you weren't already sick of me: here's a recording of a talk I gave in November at Jane Street on Intel's Skylake Microarchitecture:

youtu.be/BVVNtG5dgks?...

Day 8 of Advent of Compiler Optimisations! 🔄

Index-based for vs pointer while vs range-for vs std::accumulate—which is fastest? Three produce identical assembly, but one doesn't!

xania.org/202512/08-go...
youtu.be/FB8Hgj3TpJM

#AoCO2025

Putin’s propagandists run false claim that Zelensky offered to nominate Trump for Nobel Peace Prize in exchange for Tomahawk missiles

In fact, Zelensky spoke about nominating Trump if he helps achieve a ceasefire, not as a reward for supplying weapons.

I need this monopoly version...

didn’t think we’d need to break this one out again so soon

kamilkazani.substack.com/p/how-i-unde...